LYCOPODIALES— LEPIDODENDIIE.E— LEPIDOPHLOIOS. 211 



Lepidophloios (!) cf. Van Ingeni. 

 PI. LVIII, Fig. 1. 



Among the specimens from Pitclier's coal mine and Gilkerson's Ford 

 are immerous fragments of large Lycopodineous leaves, reaching- a width 

 of 12 mm. or more at the base and a length of 24 cm. or more, tapering 

 gradually from the base to the A'ery slender, acute apex. Portions of two 

 of these leaves, associated with twigs oi Lepidodenclron BrittsU^ are illustrated 

 in PL LVIII, Fig. 1. In the broader segment, the dorsal surface of which 

 is presented, the median nerve is rather prominent and angular in the lower 

 middle portion, though flattened and rounded toward the base. On either 

 side, and at a distance of about 2 mm. from the median line, is a narrow 

 zone, depressed in portions of its length, marked distinctly at some points 

 by a double line. This I interpret as the stomatiferous zone. Both 

 between and outside of these zones there are other parallel lines or strise 

 which resemble filaments or slender vascular strands. The feature of most 

 interest in the specimen is the impression of the upper part, if not the whole, 

 of the leaf scar. This scar, in which the mith-ib and lateral lines vanish, 

 occupies the whole breadth of the leaf base, and was evidently of very 

 little altitude. It appears to agree with the foliar cicatrices of Lejndojihhios 

 Van Ingeni, to Avhich I believe the leaves to belong. 



The reasons for regarding these leaves as pertaining to the trunks of 

 LejndojMoios Van Ingeni are: (1) The great width of the leaf bases, which 

 are much wider even than the leaf scars of Sigillaria camjjtotmiia Wood; 

 (2) the similarity in proportions between the impressions on some of the 

 leaf bases and the foliar scars on the cortex of L. Van Ingeni, there being no 

 other trunk known from this region with leaf scars of this size and approx- 

 imate form; (3) the considerable distance between what appear to be 

 the stomatiferous zones, which accords with that between the lateral cica- 

 tricules in the Lepkloxildoios, but which is much greater than in the 

 Sigillaria above mentioned, and (4) the coincident occurrence of these 

 leaves and the trunks of Lepidophloios at the same localities and in the 

 same beds. 



Localities. — Pitcher's coal mine, U. S. Nat. Mus., 6061; Grilkerson's 

 Ford, U. S. Nat. Mus., 6072. 



